Band-saw wheel.



No. 695,257. Patented Mar. ll, I902.v

T. S. WILKIN.

BAND SAW WHEEL.

(Application filed Dec. 30, 1901.]

(No Model.)

UlTED Sterne l nrnwr FFfCE.

THEODORE S. \VILKIN, OF MILIVAUKEE, \VISOONSIN.

BAND-SAW WHEEL.

SPECIFIQATION forming part of Letters Patent No. 695,257, dated March11, 1902. Application filed December 30,1901. $erial1lo. 87,678. (Nomodel.)

T0 or whom it may concern:

Be it known that I, THEODORE S. WILKIN, residing at Milwaukee, in thecounty of Milwaukee and State of Wisconsin ,have invented a new anduseful Improvement in Band-Saw Wheels, of which the following is adescription, reference being had to the accompany ing drawings, whicharea part of this specification'.

My invention relates to a band-saw wheel adapted to be employed in asawmill to carry thereon an endless saw. In use two of these wheels areemployed for carrying the endless saw which runs over them, respectivelyat the upper and lower ends of its route of travel. My improved wheel isespecially adapted for use for carrying those band-saws that areprovided with teeth on both their edges. As these teeth are worn by usethey are again sharpened by filing, and thereby the saw is made somewhatnarrower with each sharpening. The teeth of these doubleedged sawsshould project beyond the edges of the rims of the wheels on which theyare carried, and it results that it is desirable that the rims of thewheels should be brought near to each other from time to time as the sawbecomes narrower by wear and sharpening, and my improved wheel is soconstructed that it can be narrowed or adjusted as to width of the rimthereof, was to adapt it to the width of the saw.

The invention consists of the improved wheel, its parts, andcombinations of parts, as herein described and claimed, or theequivalents thereof.

In the drawings, Figure 1 is a transverse central section of my improvedband-saw wheel. Fig. 2 is an end View of a fragment of the wheel. Fig. 3is a transverse section of the hub of the wheel. verse section of thehub of thewheel on line 4 4c of Fig. 3 looking toward the right.

It is proper to say that in use band-saw wheels for this purpose arecommonly about eight feet in diameter, and the rim of the wheel isapproximately eleven inches in width. 1

In the drawings, A represents a shaft on which the band-wheel is adaptedto be mounted. The improved band-Wheel having a rim adapted to beadjustable in width is com- Fig. 4 is a trans-' posed of two membersadjustable toward and from each other 011 the shaft. The rim 5 of onemember is mounted on two sets of oppositely obliquely disposed spokes 6and 6, the spokes 6 being fixed in a hub member 7 and the spokes 6 beingfixed in a hub member 7. The similar and complementary rim 5 is mountedon two sets of reversely obliquely disposed spokes 8 and S, whichspokes, respectively, are fixed in the hub members 9 and 9. The hubmember 9 is located between the hub member 7 and the hub member 7 andthere is such space between the hub members 7 and 7 as to permit of thenecessary movement of the hub member 9 along on the shaft to permit ofthe desired adjustment of the rims 5 and 5 toward and from each other.The construction also includes the location of the hub 7 between the hubmembers 9 and 9, with capability of movement along on the shaftcorresponding with the movement of the hub member 9. These hubs are alladapted to be mounted on a shaft A and are provided with keyways forreceiving keys 1O 10 therein for locking them in position on the shaft.The keys 10 10 required to secure the hub members 7 a and 9 to the shaftare placed in position by being passed through channels 11 11 thereforin the outer hub members 7 and 9. The hub members 7 and 7 are held apartby distance-pieces 12 12, which are fixed to the hub members 7 and 7.These distance pieces 12 12 pass loosely through the intervening hubmember 9 in apertures therefor, and like distance-pieces hold the hubs 9and 9 apart, passing loosely through the intervening hub member 7. InFig. 1 and also as relates to the hub as shown in Fig. 3 the rims 5 and5 are shown in relative position of medium adjustment, so that by movingtheir respective hubs on the shaft.

the rims can be moved toward or from each other to the extent of themovement permitted to the intermediate hub members on the shaft.

Because of the peculiar and novel constructionof this wheel it isadvisable to build it by casting the rims 5 and 5 on the spokes, andwhen these have cooled to a certain degree then casting the hubs ontothe spokes, the distance-pieces keeping the hub members 9 9 from closingtogether and the distance pieces 12 12 keeping the hub members 7 and 7from closing together while the hubs are shrinking and pullinginwardlyon the spokes, which are set at oblique angles and require tension, butwould receive none from the shrinking of the hubs if they were allowedto come toward each other.

The foregoing is the preferable or advisable method of constructing thewheels; but myinvention is not limited to this method or process ofbuilding them, as the rims, spokes, and hubs could by special care becast integral and concurrently.

My improved wheels are not only adapted for the narrowing and wideningof the rims of the wheels by adjustment, but by reason of thereverselyoblique directions of the spokes in each wheel and theadjustment of the wheels on the shaft a maximum of strength is obtainedagainst radial and lateral overthrow strain thereon.

What I claim as my invention is 1. A band-saw wheel comprising twocomplete complementary wheel members each wheel member having aplurality of hub members, a hub member of each wheel member beinginterposed between the hub members of the other wheel member.

2. A band-saw wheel, comprising two complete complementary wheel memberseach wheel member havinga plurality of hub members, a hub member of eachwheel member being interposed between hub members of the other Wheelmember, and distance members securing the separated hub members of onewheel member from each other rigidly, the distance members extendingpast an interposed hub member of the other wheel.

3. A band-saw wheel, comprising two complete complementary wheel memberseach wheel member havinga plurality of hub members, a hub member of eachwheel member being interposed between hub members of the other wheelmember, and means for se curing the hub members to a shaft adjustably.

4. In combination, a shaft, a band-saw wheel comprising two completecomplementary wheel members, each wheel member having two separated hubmembers, a member of the hub of one wheel member being interposedbetween the separated hub members of 1 the other wheel member, and meanssecuring the hub members adjustably to the shaft.

In testimony whereof I affix my signature in presence of two witnesses.

THEODORE S. WILKIN. Witnesses:

G. T. BENEDICT, ANNA V. FAUsT.

